Crews closed the area to traffic at noon.
RELATED: ABC7 News photographer describes terrifying landslide experience
The closure affects a nearly 13-mile stretch of the highway between Paul's Slide and Mud Creek in Monterey County.
#Hwy1 #BigSur UPDATE: due to heavy storm activity, the road at Paul's Slide (Mile Marker 21.6) & Mud Creek (MM 8.9) will CLOSE at noon today until further notice. Access between these two sites is via Nacimiento-Fergusson Rd but thru traffic must detour along Hwys. 101, 68 & 46.— Caltrans District 5 (@CaltransD5) November 28, 2018
That area experienced the biggest mudslide in Caltrans history in May 2017.
About 6 million cubic yards of debris slid onto Highway 1 and out into the Pacific Ocean, creating 2,400 feet of new shoreline.
It took 14 months to repair the road before it reopened in July 2018.